METHOD AND APPARATUS FOR USING SOUND FROM MOVING OBJECT IN IDENTIFYING MOVING STATE RESULTING FROM OPERATION OF MOVING OBJECT

摘要

An apparatus according to the present invention distinguishes the moving state of a moving object from the surrounding sounds while moving together with the moving object. To this end, acoustic frequency distribution information is obtained regularly for a predetermined cycle with respect to the surrounding sounds generated around the apparatus. With respect to the frequency distribution information obtained at the regular intervals, a unit band having the maximum frequency component is found based on a reference bandwidth for each sub-band resulting from division of a designated target band and the unit band is marked as a dominant band. The distribution form of the dominant band is checked on a dominant band distribution table configured by combination of a pre-designated time portion of the frequency distribution information in which the dominant band is marked for each sub-band. When it is confirmed that there is a distribution pattern matching one among unique patterns respectively set for the pre-designated certain sounds, the currently moving object is identified as being in a moving state corresponding to the certain sound set as the unique pattern matching the distribution pattern.;COPYRIGHT KIPO 2020